Perhaps you should try some spelling variations:
chieu sang » chieu sach, chieu xanh, hieu lang
hanh trang » thanh trung, canh tranh, hanh trinh
hien sang » hien trang, khien bang, thien bang
qua dung » quang dung, su dung, qua cong
cong san » cong tac
san than » sang than, san thanh, ban than
than cao » toan cao, thai cao, than cap

You may be able to get more results by adjusting your search query.

• Performing a fuzzy search may retrieve terms with similar spellings: hoc ((hien sang) or (chieu sang)) - hanh trang ((qua dung) or (qua song)) cong san than cao~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc ((hien sang) OR (chieu sang)) - hanh trang ((qua dung) OR (qua song)) cong san than cao.
• Adding a wildcard symbol may retrieve word variants: hoc ((hien sang) or (chieu sang)) - hanh trang ((qua dung) or (qua song)) cong san than cao*.